TIC 454140642: A Compact, coplanar, quadruple-lined quadruple star system consisting of two eclipsing binaries

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00551298" target="_blank" >RIV/68378271:_____/21:00551298 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/21:10438771
Result on the web
<a href="http://hdl.handle.net/11104/0326724" target="_blank" >http://hdl.handle.net/11104/0326724</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/1538-4357/ac04ad" target="_blank" >10.3847/1538-4357/ac04ad</a>

Result language
angličtina
Original language name
TIC 454140642: A Compact, coplanar, quadruple-lined quadruple star system consisting of two eclipsing binaries
Original language description
We report the discovery of a compact, coplanar, quadruple-lined, eclipsing quadruple star system from Transiting Exoplanet Survey Satellite data, TIC 454140642, also known as TYC 0074-01254-1. The target was first detected in Sector 5 with a 30-minute cadence in full-frame images and then observed in Sector 32 with a 2-minute cadence. The light curve exhibits two sets of primary and secondary eclipses with periods of PA = 13.624 days (binary A) and PB = 10.393 days (binary B). Analysis of archival and follow-up data shows clear eclipse-timing variations and divergent radial velocities, indicating dynamical interactions between the two binaries and confirming that they form a gravitationally bound quadruple system with a 2 + 2 hierarchy. The Aa+Ab binary, Ba+Bb binary, and A-B system are aligned with respect to each other within a fraction of a degree: the respective mutual orbital inclinations are 0°25 (A versus B), 0°37 (A versus A-B), and 0°47 (B versus A-B).
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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